Protein S Activity - LG5340


Sunquest Code:LSMISC  
Epic Code:LAB4909Epic Name:Send Outs Misc Test
Methodology:Clotting assay
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 7 days.
Associated Links:

Specimen Collection and Processing for Coagulation Specimens



Collection Instructions

Specimen:Blood
Optimal Volume:2.7 mL (in 3 mL tube) - filled to fill line on the tube
Minimum\Peds Volume:1.8 mL (in 2 mL tube) - filled to fill line on the tube
Container:Blue Na Citrate, 3.2% - fill to fill line on tube
Collection Instructions:Patients should be off warfarin for at least 4 weeks before drawing a sample. The assay kit manufacturer has demonstrated the assay to be unaffected by levels of unfractionated heparin or low molecular weight heparin up to 2 IU/mL, but the results may be artifactually elevated in samples containing dabigatran or rivaroxaban.
Causes for Rejection:Overfilled or underfilled tubes. Specimen other than citrated plasma.


Processing and Shipping

Specimen Processing:See link to Specimen Collection and Processing for Coagulation Specimens for platelet-poor plasma. Aliquot 0.5 mL, 0.3 mL minimum.
Shipping Instructions:Ship on dry ice.
Test Performed at or Referral Lab Lab Sendouts  (Versiti)
Referral Lab number:1041


Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
systemlabguide@fairview.org for TestID: 5340"